STRUCT CAAM_PKEY_INFO(9)

💖 struct caam_pkey_info(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the whole vibe of struct caam_pkey_info, which is, like, information for CAAM protected key. that's the NAME, that's the assignment, and she ate 💅

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✨ SYNOPSIS ✨

here's the actual shape of her, no cap, copy it exactly:

struct caam_pkey_info {
    u8 is_pkey;
    u8 key_enc_algo;
    u16 plain_key_sz;
    u8 key_buf[];
};

that's the whole struct. she's small, she's efficient, she's giving main character energy 🦋

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🎀 Members 🎀

okay so let's go through her fields one by one, because each one is doing something and we respect her for it:

• is_pkey — this is literally just a flag to identify, if the key is protected. that's it, that's the job 🌸 like a little "yes bestie this one's protected" badge.
• key_enc_algo — this one identifies the algorithm, ccm or ecb. two choices, two vibes, pick your fighter 🔥
• plain_key_sz — size of plain key. she's a u16, she knows how big the plain key is, and honestly? iconic 👑
• key_buf — contains key data. the actual payload, the real one, the star of the show ⭐

ngl the [] on key_buf means it's a flexible array member — it's just there, chillin' at the end of the struct 🫶

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🌈 SEE ALSO 🌈

go read these next, iykyk — they're all hanging out in the kernel file ./include/soc/fsl/caam-blob.h:

• struct caam_blob_info(9)
• caam_blob_gen_init(9)
• caam_blob_gen_exit(9)
• caam_process_blob(9)
• caam_encap_blob(9)
• caam_decap_blob(9)

they're all part of the same blob family bestie, go say hi 💜

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and that's the page! fr fr you understood all of it 😭✨ this one lives over in ./include/soc/fsl and it's dated October 2026 — so like, mark your calendar, and remember: struct caam_pkey_info(9) in the Kernel API Manual, periodt 💅💖🎀